The Scientific Case for Action on Emissions

In this presentationProf Sir Brian Hoskins,  Director of the  Grantham Institute Imperial College,  gives  a summary of the essentials of climate science,  noting the scale of man-made additions to the CO₂ stock in the atmosphere, the inevitable uncertainty in specific projections, and implications for future global climate. By continuing to emit greenhouse gases to the atmosphere we were performing a very dangerous experiment with planet Earth.  Possible policy responses grouped included mitigation, geo-engineering, and adaptation.  On geo-engineering, the main drawbacks were potential cost, global governance, and potential irreversibility of commitment to geo-engineering solutions.